3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arr = array('a', 'b'); foreach ($arr as $a) { var_dump($a); } foreach ($arr as &$a) { var_dump($a); }

Here you find the average performance (time & memory) of each version. A grayed out version indicates it didn't complete successfully (based on exit-code).

VersionSystem time (s)User time (s)Memory (MiB)
8.3.40.0150.00418.56
8.3.30.0110.00718.79
8.3.20.0040.00420.30
8.3.10.0090.00020.48
8.3.00.0080.00019.26
8.2.170.0110.00422.96
8.2.160.0080.00820.39
8.2.150.0040.00424.18
8.2.140.0050.00324.66
8.2.130.0000.00726.16
8.2.120.0040.00422.21
8.2.110.0060.00319.33
8.2.100.0030.01017.91
8.2.90.0000.00818.89
8.2.80.0040.00417.97
8.2.70.0060.00317.50
8.2.60.0050.00317.93
8.2.50.0030.00818.10
8.2.40.0000.00720.26
8.2.30.0000.00821.09
8.2.20.0040.00417.56
8.2.10.0000.00718.11
8.2.00.0020.00517.61
8.1.270.0030.00623.91
8.1.260.0000.00726.35
8.1.250.0000.00728.09
8.1.240.0060.00323.91
8.1.230.0060.00620.88
8.1.220.0040.00417.74
8.1.210.0040.00418.77
8.1.200.0060.00317.35
8.1.190.0090.00317.35
8.1.180.0090.00018.10
8.1.170.0040.00418.68
8.1.160.0020.00518.88
8.1.150.0050.00318.88
8.1.140.0030.00617.39
8.1.130.0030.00317.88
8.1.120.0050.00317.44
8.1.110.0070.00017.43
8.1.100.0000.00817.34
8.1.90.0080.00017.36
8.1.80.0070.00017.34
8.1.70.0040.00417.39
8.1.60.0050.00317.61
8.1.50.0050.00317.43
8.1.40.0040.00417.50
8.1.30.0000.00817.56
8.1.20.0040.00417.61
8.1.10.0040.00417.46
8.1.00.0030.00617.30
8.0.300.0040.00818.77
8.0.290.0070.00016.63
8.0.280.0030.00618.49
8.0.270.0070.00017.17
8.0.260.0070.00017.12
8.0.250.0000.00716.82
8.0.240.0000.00716.99
8.0.230.0070.00016.96
8.0.220.0000.00716.87
8.0.210.0000.00616.89
8.0.200.0080.00017.01
8.0.190.0000.00716.95
8.0.180.0080.00016.95
8.0.170.0000.00816.81
8.0.160.0070.00016.74
8.0.150.0070.00016.89
8.0.140.0030.00416.88
8.0.130.0060.00013.33
8.0.120.0000.00816.80
8.0.110.0040.00416.84
8.0.100.0000.00716.76
8.0.90.0080.00016.74
8.0.80.0040.01116.86
8.0.70.0000.00716.75
8.0.60.0080.00016.78
8.0.50.0050.00316.83
8.0.30.0090.00917.10
8.0.20.0120.00817.40
8.0.10.0000.00817.03
8.0.00.0050.01516.81
7.4.330.0020.00215.02
7.4.320.0000.00616.43
7.4.300.0030.00316.39
7.4.290.0000.00616.40
7.4.280.0060.00316.43
7.4.270.0030.00316.56
7.4.260.0000.00916.40
7.4.250.0000.00716.57
7.4.240.0040.00416.46
7.4.230.0000.00716.49
7.4.220.0090.01016.58
7.4.210.0030.01016.70
7.4.200.0030.00316.31
7.4.160.0040.01216.27
7.4.150.0100.01017.40
7.4.140.0120.00817.86
7.4.130.0090.01116.42
7.4.120.0110.00516.52
7.4.110.0140.00316.40
7.4.100.0100.01016.67
7.4.90.0030.02216.56
7.4.80.0060.01218.63
7.4.70.0100.00616.58
7.4.60.0060.00916.48
7.4.50.0050.00316.29
7.4.40.0140.00516.28
7.4.30.0090.00916.46
7.4.00.0100.00614.81
7.3.330.0020.00212.99
7.3.320.0000.00513.15
7.3.310.0070.00016.08
7.3.300.0030.00316.15
7.3.290.0050.01116.18
7.3.280.0070.01016.30
7.3.270.0060.01217.40
7.3.260.0050.01816.33
7.3.250.0080.00916.41
7.3.240.0080.00816.57
7.3.230.0070.00716.62
7.3.210.0060.01116.54
7.3.200.0150.00419.39
7.3.190.0120.00616.27
7.3.180.0090.01316.28
7.3.170.0130.00316.46
7.3.160.0100.00616.38
7.3.10.0110.01116.45
7.3.00.0140.01116.10
7.2.330.0130.00316.62
7.2.320.0090.00916.66
7.2.310.0070.01016.54
7.2.300.0030.01516.70
7.2.290.0110.01116.51
7.2.130.0140.00316.48
7.2.120.0120.01516.73
7.2.110.0040.01116.43
7.2.100.0150.00316.32
7.2.90.0110.01116.58
7.2.80.0120.00616.09
7.2.70.0060.01216.27
7.2.60.0110.01116.81
7.2.50.0040.01116.62
7.2.40.0150.00916.52
7.2.30.0170.00316.37
7.2.20.0060.01216.38
7.2.10.0190.00416.89
7.2.00.0020.01318.13
7.1.250.0170.00315.59
7.1.200.0030.01015.88
7.1.100.0060.00617.94
7.1.70.0050.00316.94
7.1.60.0090.01519.32
7.1.50.0100.01016.96
7.1.00.0030.07722.43
7.0.200.0040.00416.89
7.0.140.0070.07322.18
7.0.60.0070.04319.82
7.0.50.0070.08017.81
7.0.40.0100.07720.04
7.0.30.0530.04720.30
7.0.20.0300.08020.21
7.0.10.0100.06720.16
7.0.00.0100.06320.04
5.6.280.0070.07021.10
5.6.210.0230.06320.75
5.6.200.0030.04318.19
5.6.190.0030.05720.39
5.6.180.0430.05320.56
5.6.170.0430.05320.48
5.6.160.0100.05320.44
5.6.150.0100.08018.21
5.6.140.0100.07718.21
5.6.130.0100.07018.17
5.6.120.0030.08720.93
5.6.110.0170.07720.98
5.6.100.0100.07021.00
5.6.90.0100.08021.11
5.6.80.0070.05020.34
5.5.350.0170.07720.44
5.5.340.0100.07717.92
5.5.330.0130.07020.37
5.5.320.0470.06320.19
5.5.310.0030.05020.30
5.5.300.0100.04717.88
5.5.290.0130.07017.88
5.5.280.0070.08720.89
5.5.270.0100.06320.75
5.5.260.0070.07020.88
5.5.250.0130.07020.74
5.5.240.1200.03320.00
5.4.450.0070.07019.51
5.4.440.0870.05319.63
5.4.430.0730.05019.47
5.4.420.0130.05019.10
5.4.410.0700.05719.28
5.4.400.0830.05319.19
5.4.390.0800.05318.93
5.4.380.0400.06718.72
5.4.370.0370.05318.72
5.4.360.0470.06018.64
5.4.350.0470.05718.50
5.4.340.0300.06718.75
5.4.320.0050.03912.46
5.4.310.0070.03712.45
5.4.300.0090.03512.46
5.4.290.0090.05012.45
5.4.280.0040.03712.35
5.4.270.0100.03312.35
5.4.260.0060.03712.35
5.4.250.0040.04212.35
5.4.240.0080.03712.35
5.4.230.0060.03912.34
5.4.220.0030.04112.34
5.4.210.0080.03412.34
5.4.200.0010.04212.34
5.4.190.0080.03812.34
5.4.180.0080.03912.34
5.4.170.0140.04612.35
5.4.160.0110.05512.34
5.4.150.0130.08212.34
5.4.140.0080.05112.03
5.4.130.0060.03712.01
5.4.120.0090.03511.97
5.4.110.0040.03911.97
5.4.100.0030.03811.97
5.4.90.0030.04011.96
5.4.80.0080.03611.96
5.4.70.0050.05411.96
5.4.60.0060.04811.96
5.4.50.0070.04911.96
5.4.40.0070.04411.95
5.4.30.0060.04911.95
5.4.20.0010.05511.95
5.4.10.0070.03511.95
5.4.00.0040.03811.43
5.3.290.0060.04312.80
5.3.280.0070.03712.70
5.3.270.0100.04112.73
5.3.260.0080.03812.72
5.3.250.0050.03912.72
5.3.240.0070.03712.72
5.3.230.0090.03512.71
5.3.220.0070.04212.68
5.3.210.0080.03812.68
5.3.200.0040.03812.68
5.3.190.0050.03912.68
5.3.180.0080.05112.67
5.3.170.0070.03812.67
5.3.160.0080.03712.68
5.3.150.0100.04312.67
5.3.140.0050.05412.66
5.3.130.0080.03912.66
5.3.120.0100.05212.66
5.3.110.0110.03912.66
5.3.100.0070.05512.12
5.3.90.0090.05112.09
5.3.80.0110.04912.07
5.3.70.0090.04912.08
5.3.60.0110.04712.07
5.3.50.0080.04112.00
5.3.40.0060.03812.00
5.3.30.0080.04411.95
5.3.20.0080.03511.72
5.3.10.0090.03511.69
5.3.00.0060.04411.67
5.2.170.0070.0409.18
5.2.160.0060.0409.18
5.2.150.0100.0479.18
5.2.140.0070.0379.18
5.2.130.0040.0299.13
5.2.120.0060.0279.14
5.2.110.0030.0309.14
5.2.100.0050.0289.14
5.2.90.0030.0309.14
5.2.80.0020.0329.14
5.2.70.0040.0309.13
5.2.60.0040.0369.09
5.2.50.0030.0329.06
5.2.40.0070.0289.03
5.2.30.0040.0309.01
5.2.20.0050.0289.00
5.2.10.0040.0288.92
5.2.00.0080.0258.77
5.1.60.0080.0238.06
5.1.50.0050.0238.05
5.1.40.0030.0288.04
5.1.30.0040.0248.39
5.1.20.0030.0328.41
5.1.10.0030.0378.13
5.1.00.0020.0278.14
5.0.50.0020.0226.62
5.0.40.0030.0296.48
5.0.30.0020.0426.29
5.0.20.0060.0186.26
5.0.10.0020.0216.24
5.0.00.0050.0286.23
4.4.90.0020.0164.78
4.4.80.0040.0134.76
4.4.70.0030.0154.76
4.4.60.0070.0114.75
4.4.50.0000.0194.77
4.4.40.0020.0364.71
4.4.30.0030.0154.76
4.4.20.0060.0204.85
4.4.10.0020.0204.85
4.4.00.0030.0284.76
4.3.110.0040.0174.67
4.3.100.0020.0174.67
4.3.90.0020.0164.63
4.3.80.0020.0254.58
4.3.70.0020.0154.63
4.3.60.0010.0164.63
4.3.50.0020.0164.63
4.3.40.0020.0244.54
4.3.30.0020.0163.29
4.3.20.0020.0163.27
4.3.10.0010.0173.21
4.3.00.0070.0206.87

preferences:
42.65 ms | 400 KiB | 5 Q